Gas pressure regulator



FIG. 1 is a left side elevational view of a gas pressure regulator embodying my design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a left end elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a right end elevational view thereof; and

FIG. 6 is a perspective view thereof. 

The ornamental design for a gas pressure regulator, substantially as shown. 